PSI - Issue 53

João Alves et al. / Procedia Structural Integrity 53 (2024) 236–245 Author name / Structural Integrity Procedia 00 (2019) 000–000

240

5

Table 1. Chemical powder characteristics from Ti-6Al-4V grade 23. Alloy: Grade: Chemical composition (wt%): Ti-6Al-4V 23 Al V Fe O C N

H

Y

6,22 4,01 0,25

0,10 0,08 0,03 0,012 0,005

Table 2. Manufacturing parameters (hatch vector) Manufacturing Parameters: Up-skin

In-skin:

Down-skin: Core:

Laser Power (W) Scan Speed (mm/s) Hatch distance (mm) Layer thickness (mm) Energy Density (J/mm 3 )

180

180

150

-------------- -------------- -------------- -------------- --------------

1000 0.08 0.03 75.00

1000 0.12 0.03 50.00

1500 0.06 0.03 55.56

Table 3. Manufacturing parameters (boarder) Manufacturing Parameters: Up-skin

In-skin:

Down-skin: Core:

Number of boarders Laser Power (W) Scan Speed (mm/s) Hatch distance (mm) Layer thickness (mm) Energy Density (J/mm 3 )

0

1

1

-------------- -------------- -------------- -------------- -------------- --------------

-------------- -------------- -------------- -------------- --------------

160 900 0.08 0.03

180 700 0.08 0.03

74.07

107.14

Table 4. Manufacturing Conditions. Parameters:

Results:

Over supply

115

Oxygen level (%)

0.000 Argon

Inert gas

Air speed (m/s)

2.97

Temperature inside the chamber (ºC)

26

Platform temperature (ºC)

71.20

Humidity (%)

48.5

Fig. 2. Process powder preparation cycle.

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